# Einführung

This extension provides access to the reference implementation of CommonMark, a rationalized version of Markdown syntax with a specification.

##### Parsing:

The CommonMark extension provides a simple parsing API:

CommonMark\Parse(string `$content`, int `$options` = ?): CommonMark\Node

##### Rendering:

The CommonMark extension provides simple rendering API that supports multiple formats:

CommonMark\Render(CommonMark\Node `$node`, int `$options` = ?, int `$width` = ?): string
CommonMark\Render\HTML(CommonMark\Node `$node`, int `$options` = ?): string
CommonMark\Render\XML(CommonMark\Node `$node`, int `$options` = ?): string
CommonMark\Render\Man(CommonMark\Node `$node`, int `$options` = ?, int `$width` = ?): string
CommonMark\Render\Latex(CommonMark\Node `$node`, int `$options` = ?, int `$width` = ?): string

##### AST:

The CommonMark extension implements visitation for CommonMark\Node objects:

public CommonMark\Node::accept(CommonMark\Interfaces\IVisitor `$visitor`): void

##### CQL:

The CommonMark extension provides an interface to CQL, CommonMark Query Language:

public CommonMark\CQL::__construct(string `$query`)
`↑` and `↓` to navigate • `Enter` to select • `Esc` to close • `/` to open